
Wall mounted condensing boilers Ariston Clas One belong to the next generation of condensing systems for complete heating management. Ready to connect with the Cube S Net thermostat. Have the XtraTechTM stainless steel heat exchanger, for improved water flow, which increases heating efficiency.
Advantages:
- Energy Clas A achievable with thermal regulation.
- 1:7 modulation ratio.
- New stainless steel XtraTechTM heat exchanger exclusive to Ariston, with high head.
- Six year warranty for the entire boiler. 10 year warranty for XtraTechTM.
- Compatible with thermostat Cube S NET connectivity to Ariston NET Application for Remote Control.

High Comfort Features:
AUTO function: Maximum comfort, efficiency and energy savings, based on the automatic analysis of the environmental conditions, the internal devices connected and the required efficiency. It thus avoids temperature fluctuations and peaks, giving a constant temperature for maximum thermal comfort.
Comfort function: Gives instant hot water for 30 'after the first pull, eliminating waiting times. More hot water is delivered thanks to the large hot water exchanger.
Quiet operation: Maximum peace and sound comfort will be in your home.
Ariston Net ready out of the box for smartphone control.
New WiFi room sensor Ariston Cube S Net in combination with the Clas One connects your boiler with the Ariston Net application for complete comfort every day. Direct control of up to 6 heating zones thanks to wired zone management kits. Easy adjustment of the desired room temperature. Configuration technology.
* Attention, Cube S Net room sensor is not included in the price.
Additional advantages:
- Compact structure.
- "ALWAYS ON" technical support: Thanks to the innovative control system, the application is able to advise you in case of any problem in the system. By activating the remote diagnostic service the after-sales service company is able to solve many problems remotely.
- Quick installation: Easy connections, bus bridgenet protocol, direct management of the external pump.
- The conversion to LPG is done from the technician menu.
- Easy maintenance: Front access to main parts, Easy diagnosis, Improved access to expansion tank. Gently open the control panel
Technical Data Clas ONE:
Technical data
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Clas One 24FF
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Clas One 30FF
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Clas One 35FF
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Power specifications
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Max/Min nominal calorific flow rate (Pci) Qn
|
Kw
|
22,0/3,7
|
28,0/4,3
|
31,0/5,0
|
Max/Min nominal calorific flow rate Pcs) Qn
|
Kw
|
24,4/4,1
|
31,1/4,8
|
34,4/5,6
|
Domestic hot water max/min nominal flow rate (Pci) Qn
|
Kw
|
26,0/3,7
|
30,0/4,3
|
34,5/5,0
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Domestic hot water max/min nominal flow rate (Pcs) Qn
|
%
|
28,9/4,1
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33,3/4,8
|
38,3/5,6
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Max/min power output (80°C-60°C) Pn
|
%
|
21,4/3,4
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27,4/3,9
|
30,2/4,7
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Max/min power output (50°C-30°C) Pn
|
%
|
23,6/3,9
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30,0/4,5
|
33,5/5,3
|
Domestic hot water max/min power output Pn
|
%
|
24,9/3,5
|
28,7/4,1
|
33,0/4,8
|
Combustion efficiency (of flue gas)
|
%
|
98
|
98
|
97,9
|
Nominal calorific flow rate efficiency (60°/80°C) Hi/ Hs
|
%
|
97,5/87,8
|
97,9/88,2
|
97,5/87,8
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Nominal calorific flow rate efficiency (30°/50°C) Hi/ Hs
|
%
|
107,3/96,7
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107,3/96,6
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108,2/97,4
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Efficiency at 30% at 30°C Hi/ Hs
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%
|
109,8/98,9
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109,6/98,7
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109,6/98,7
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Minimum calorific flow rate efficiency (60°/80°C) Hi/ Hs
|
%
|
93,1/83,8
|
91,1/82
|
93,3/84
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Efficiency rating (dir. 94/42/EEC)
|
****
|
****
|
****
|
Loss of burner gas when operating
|
%
|
2
|
2
|
2,1
|
Energy class & Domestic hot water production energy class: Α
|
Heating circuit
|
Expansion chamber inflation pressure/ Maximum heating pressure
|
bar
|
1/3
|
Expansion chamber capacity
|
l
|
8
|
8
|
8
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Max/min heating temperature (high temperature range.)- (low temperature range)
|
°C
|
82/35-45/20
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Domestic hot water
|
Hot water comfort rating ΕΝ13203
|
***
|
Hot water minimum flow rate
|
l/min
|
<2
|
<2
|
<2
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Domestic hot water max/min temperature
|
°C
|
60/36
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Specific flow rate of domestic hot water (ΔΤ=30°C)
|
l/min
|
12,1
|
14,5
|
16,7
|
Quantity of hot water (ΔΤ=25°C)/ (ΔΤ=35°C)
|
l/min
|
14,5/10,4
|
17,4/12,5
|
20/14,3
|
Domestic hot water max/min pressure
|
bar
|
7/0,2
|
Emissions
|
Available air pressure
|
Pa
|
100
|
100
|
100
|
Nox class
|
5
|
5
|
5
|
Flue gas temperature (80°C-60°C) (G20)
|
°C
|
61
|
62
|
63
|
CO content (80°C-60°C)
|
ppm
|
141,8
|
123,8
|
106,5
|
CO2 content (G20) (80°C-60°C)
|
%
|
9,2/8,9
|
O2 content (G20) (80°C-60°C)
|
%
|
3,9
|
4,2
|
4,3
|
Maximum flue gas flow (G20) (80°C-60°C)
|
Kg/h
|
42,1
|
48,6
|
56,1
|
Excess air (80°C-60°C)
|
%
|
23
|
25
|
26
|
Electrical
|
Power supply frequency/voltage
|
V
|
230/50
|
Total electrical power absorbed
|
W
|
104
|
114
|
115
|
Minimum ambient temperature for use
|
°C
|
>0
|
Protection level for the electrical appliance
|
IP
|
IPX5D
|
Weight
|
Kg
|
29,7
|
32,3
|
34,6
|